Hip-hop, just like other genres, hasn't really boasted many groups that have stayed together for decades. Attitudes and personalities flare and clash. Sophomore slumps come about and albums flop. Reunion tours showcase an act that's limp and uninspired. However, 38 year-old Tajai Massey (who goes simply by Tajai) and the Souls of Mischief crew appear to be a glaring exception.